nasal placodes

na·sal plac·odes

paired ectodermal placodes that come to lie in the bottom of the olfactory pits as the pits are deepened by the growth of the surrounding medial and lateral nasal processes. Synonym(s): olfactory placodes

na·sal plac·odes

(nāzăl plakōdz) Paired ectodermal plates that come to lie in bottom of olfactory pits as they deepen by growth of surrounding medial and lateral nasal processes.